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Full text of "The Morphology And Evolution Of The Apes And Man"

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THE  XEBVOTTS SYSTEM                  -.8:*
The unbranched calcarine srJcus ;* a Wendoi crxicii'.r,^ and retrocalcarine elements ; and the collateral -iiieus may run into it. The latter joins the oce:pitr-ten:u,ni sulcus anteriorly. The caHoso-xuargir-al *ui^;> > veil marked.
The general distribution of the >truct"re^ T; th>? mesial surface of the hemisphere Is like that in Mas,
The cerebellum has relatively larger paraftoccrdi tl:a" in Man, and the corpus trapezoides is concealed.
The neopallium has already been described, and "iT.sey finds that the histology of the brain-stern U very v*iii:!?*i" to that in Man.
The auditory nerve is well marked and the mesial geniculate body is relatively larger than in Man* The auricle is, however, about the same as in him.
Olfactory Nerve.—The terminal ramifications of the first cranial nerve in the mucosa of the nasal septum and superior turbinate region are xvell marked. The nerve itself is large in the Gorilla.
Optic Nerve.—The second cranial nerve is as in Man.
Oculo-motor Nerve.—In the Chimpanzee there are superior and inferior divisions. The former, running on the inner side of the superior rectus, supplies the superior rectus, inferior rectus and levator palpebrse superioris. The latter, running on the outer side of the inferior rectus muscle, supplies the inferior rectus and inferior oblique muscles, and sends a motor branch to the ciliary
Trigeminal Nerve.—Three divisions radiate from the